Spacing stirrup for holding and spacing tubular molding forms



Aug. 11, 1942. E, v POSTON 2,292,655

SPACING STIRRUP FOR HOLDING AND SPACING TUBULAR MOLDING FORMS Filed March 6, 1940 1 Zhwentor (Ittorneg Patented Aug. 11, 1942 SPACING STIRRUP FOR HOLDING AND SPACING TUBULAR MOLDING FORMS Emmett V. Poston, Springfield, Ill., assignor to Poston Springfield Brick ,Company, Springfield, Ill., a corporation of Illinois Application March 6, -1940, Serial No. 322,587

Claims.

My invention relates to devices used in connection'with pouring and setting cementitio .s forms; an object being in my device to provide a support and spacer for reinforcements and coring forms in conjunction with the making of structural forms.

A further object of my invention is to provide in an integral stirrup construction,-a convenient, economical and simple device not only adapted to support reinforcing rods and coring tubes in forms when pouring cementitious materials for producing structural members, but also, to provide in such stirrups a substantial and practical means of spacing these reinforcing rods and coring tubes in a predetermined interspace relationship in the cementitious mass of the structural member.

A particular purpose of my device is to provide an integral stirrup which will be economical to make, simple to handle and very effective as a support and spacer for reinforcing rods and coring tubes for cementitious structural members, and in such a stirrup a construction permitting such rods to be conveniently laid in place and permitting coring tubes to be set in place and held in their desired spaced position while the cementitious material is being poured in place about the stirrups, rods, and coring forms before the material sets and hardens.

I achieve the purposes of my invention by the device described in this specification, recited in the claims and illustrated in the drawing:-

In the drawing it will be noted that:

Figure 1 is "a perspective of one form of my 5 :rrup.

Figure 2 is a perspective of another and coiled form of my stirrup.

Figure 8 is a cross-section of a cementitious structural member with my stirrup set in position to space and support the reinforcing rods and coring tubes in place.

Figure 4 is a perspective illustrating the manner in which my stirrup supports and spaces the reinforcing rods and coring tubes used in reinforcing and coring a cementitious structural member while it is being poured and set to harden.

I shall now point out the features of practical merit in my invention as I describe the same in comprehensive detail.

I am aware of the existence of numerous types and constructions of supports and spacers for inserts used in preparation of molded products; but the special function and novel construction of my simple and practical merits thereof are disclosed herein.

For instance, when preparations are being made to pour and set a cementitious structural member, l, which will have in it some reinforcing rods and longitudinal cores then my stirrup is utilized to a marked advantage, as' is shown in Figures 3 and 4.

In a study of the drawing, it will be noted that for the purposes of my invention, the form shown in Figure 1, and that shown in Figure 2, will have an equal merit in utility.

In regard to the practical servicable merits of my stirrup, for instance, it will be observed that in the making of a structural member I which is poured in forms 2, I will set a number of my stirrups 3 into their desired positions preferably in a uniformly spaced arrangement between spaced forms 2 and throughout their length, so that stirrups 3 may be permitted to effectively provide a substantial support for reinforcing rods 4, 5, 6, l and 8, when they are placed in the relative positions where they will be needed in the cementitious member I when it is poured.

In this way, a support for these reinforcing rods, while the cementitious member is being poured, is provided in a stirrup preferably formed of wire which will occupy a comparatively small space in the member.

In the manner in which these stirrups'are transversely disposed in a number of places along the length of the structure, they will not only provide this supportfor the reinforcing rods but they will effectively add a reinforcing transverse stability to the structure member.

It will be noted that stirrups 3 are uprightly supported upon pins or legs 9 and HI when they are set into place; while at the same time, it is true that if desired, these stirrups 3 could be provided with the supporting legs made by deforming the bottom cross-wire thereof in a manner that will provide supporting legs H and I2 in the form shown in Figure 4.

However, where legs 9 and ID are provided as a pin construction as is shown in Figures 1, 2 and 3, then such supports will be secured in place preferably by welding.

It will be noted that the top wire I 3 in my stirrup as is shown in the form illustrated in Figures 1, 3 and 4 is shaped to define terminal hooks l4 and I5 and a central supporting recess l6; while the bottom wire I! of my stirrup is shaped to define terminal hooks l8 and I9 for the support of reinforcing rods 1 and 8 and to define lateral stirrup will be readily noted as the economical, spacers,'holding the stirrup against the forms 2.

A further purpose of my stirrup is to provide a substantial snug spacing support for coring tubes 20 and 2| which extend throughout the length of the forms 2 and are preferably made of paper tubing so that they may rot away after the structural form has been poured and set, or may be removed if desired. These paper tubes will hold up Substantially for the time that they are needed to properly locate longitudinal spaced cores throughout the length of a cementitious structural member I when the cementitious material is poured into the forms over the reinforcing rods and coring tubes and permitted to set. The longitudinal cores are in this manner properly shaped in the structural member.

In Figure 1, I have illustrated the circular supports 22 and 23 for coring tubes 20 in the form in which they would be made as complete circles welded to wires l3 and I1; while in Figure 2, I have shown that a similar stirrup may be made by coiling the top wire 24 in a manner defining terminal hook 25, central supporting recess 26; circular loop 21 and terminal hook 28; and, at the same time, it would be a practical construction to shape the bottom vwire 21 in a manner defining terminal hook 30, circular loop 3|, and terminal hook 32 with pin or leg members 9 and I welded to the bottom wire 29.

['hus, it will be observed that in my invention, I am providing for a substantial means of supporting and spacing the reinforcing rods and coring tubes in one of the structural members for which my stirrup is made.

It is obvious that my stirrups could be made in not only one of several forms and materials but for the sake of explanation of the merits of my invention, I have illustrated the preferred forms thereof, realizing, for instance that my stirrups could be stamped, formed or molded and that instead of terminal hooks if it should be desired,

loops or eyes could be provided, but these hooks,

will afford an opportunity for the reinforcing rods to be laid in place rather than threaded through such loops.

Having thus described the nature of my invention, what I claim is:

1. A supporting and spacing stirrup for spacing and supporting reinforcing rods and coring tubes while pouring and setting cementitious structural members, and comprising in integral combination a pair of integral wire members secured together; one of said wire members shaped to define terminal upturned hooks and a central clip on the same level with said hooks and into which reinforcing rods may be laid on the same level and also to define an integral circular downward loop therein providing a wire support for a. coring tube; the other of said integral wire members shaped to define terminal upturned hooks for spacing and respectively supporting reinforcing rods at its terminals and to define an upturned circular loop for the spaced support of a second coring tube; said loops establishing connection between said supporting wire members, and said stirrup provided with a pair of spaced integral wire supporting legs for holding the same in upright position off the bottom of a form used for molding said structural members.

2. A supporting and spacing stirrup comprising in integral combination, a plurality of spaced wires shaped to define in each, spaced deformations for supporting reinforcing rods, a pair of spaced arcuate wire members establishing connection between said .rod supporting wires for supporting coring tubes, and a plurality of integral wire supporting legs for said stirrup.

3. In a supporting and spacing stirrup, the combination of a plurality of wire members shaped to define spaced horizontally disposed rod support members provided with integral deformations defining holding means for horizontal reinforcing rods, with integral spaced arcuate loop members establishing integral connection between said deformed wire rod supports for encompassing and supporting coring tubes, and a plurality of supporting legs for holding said stirrup.

4. A supporting and spacing stirrup for holding reinforcing rods and coring tubes and comprising, in integral combination, a plurality of spaced horizontally disposed wires formed at their terminals to define upturned outwardly extending hook members providing rod supports and lateral stop members while in a molding form, said wire members also deformed intermediate their ends to define reinforcing rod spacers and supports, a pair of arcuate spaced integral wire members for encompassing and holding parallel spaced coring tubes and establishing integral connection between said spaced wire members, and a plurality of supporting legs for said stirrup.

5. A supporting and spacing stirrup for holding reinforcing rods and coring tubes while pouring and setting cementitious materials and comprising in integral combination, a plurality of parallel spaced wire members horizontally disposed, and each shaped to define terminal hooks and intermediate wire pockets for holding said rods, a pair of integral spaced arcuate wire members establishing integral connection between said parallel rod supporting wires for said coming tube support, one of said arcuate wire members deformed in shape to hold one side of one of said cores, and the other of said arcuate members deformed in shape to hold the opposed side of one of said cores, said stirrup provided with a pair of spaced integral supporting pins defining legs for the upright support of the stirrup.

EWETT V. POSTON. 

